utils.net: Use _ipAddr and _domain from utils.web to define emailRe
utils.net: Use _ipAddr and _domain from utils.web to define emailRe

Signed-off-by: James McCoy <91ae71a1168cea0b65ac9975da69d5a7753116be@users.sourceforge.net>

haxwithaxe/supybot,Ban3/Limnoria,jeffmahoney/supybot,frumiousbandersnatch/supybot-code,buildbot/supybot,ProgVal/Limnoria-test,Ban3/Limnoria,ProgVal/Limnoria-test